Filter



.BURCH. FILTEIL.

(No Model.)

Patented ct' UNITED STATES PATENT OFFICE.

ELI F. BURCH, OF BALTIMORE, MARYLAND.

FILTER.

SPEGIFICA'JJION' forming part of Letters Patent No. 56,666,dated0ctober17, 1893.

Application filedMarch 6, 1893.

T0 atZl whom it may conoern:

Be it known that I, ELI F. BURCH, a citizen of the United States,residing at Baltimore, in the State of Maryland, have invented. cortannew and useful Improvements in Filters; andI do declare the followngtobe a full, olear, and exaot descrption of the invention, such as willenable others skilled in the art to whch it appertains to make and usethe same, reference being had to che aecompanyng drawings, and to theletters of reference marked thereon, whch form a part of thisspecificaton.

My invention has relation to filters, and it relates more partioularlyto that class of filters desgned partcularlyfor filterin g ol, and amongthe objects in vew, s to provide an extremely smple, nexpensive andefficient filter which is adapted to filter oi1 in a thorough manner;also to provide such a filter in which the filtering media maybe readilyremoved from the apparatus for the purpose of cleanng and substtutingfresh filterng materal.

'llhe invention Consists in the pecnliar constrnction, arrangement andcombination of parts, as heren;after fu1ly described, illustrated in theaccompanyng drawings and ponted out in the appended claims.

In the drawings:-Figure 1 is an elevaton of my mproved filter, and Fig.2 is a vertioal section thereof.

A indicates an0nter sheet metal or other casng or tank preferablyoylindrical in form and of any desired capacity. Within the upperportion of said. tank is arranged a eylindrcal vessel B, which isprovided with a conica1 bottom b, as shown sad vessel' resting upon ashoulder or lugs a, provded upon the nteror of the tank A, and withinthe vessel B s arranged a vessel C having a wre 01 perforated bottom c.

Withn the 1ower porton of the tank is arrangad a cylindrical vessel Dthe diameter of whch is less than the interior of the tank, so as toleave an annular space between the two. Upon che upper end of the vesse1D is fittod a hood or cover E having a central opening e.

F indcates,a pipe the upper end of which is fitted within the conicalbottom 1), of vessel B and passng downwardly through the open- SerialNo.464,819. (No model.)

ing e, into the vessel D and in proximty to the bottom of the tank andat that point it is provided with a rose head or spraying device G,which s provided wth the horizontal radia1 arms g, perforated as shown,or sad arms may be tapped directly into the pipe F if desired. Thenumber of these arms may, of course, be varied, as desred.

The vessel D may be supported upon suitable legs so as to provide spacesd between the Iower edge of said vossel and the bottom of the tank, orthe vessel itselt' may be out away at its lower end to provide suchspaces.

Withn che vessel D toward its u.pper end is fitted. a filtering orscreen p1ate H upon Which is placed any suitable filtering mate- 1ia1 Hpreferably cork shavings, and above sad materal is placed layers of fe1tor simi- 1ar materal I.

Upon the perforated bOttom 0, of "essel 0 is plaoed suitable filteringmateral K such as sand or the like, and above the same is arranged afiltering or soreen plate L.

M indicates a pipe which passes downwardly Within the tank exteriorly ofvesse1 D and having tsllower end communicatng With the nterior of saidvessel.

N indicates suitaole draw-ofi cocks for the filtered oil and water.

0 -is a sediment cock or valve for drawing off the sediment from the oilor water, and P are suitable gage glasses provided in the tank A fordetermining the level of the oil and wator in sad tank.

If desired the pipes F and M may be made in sections detachablyconnectod togethor by suitable sleeves'or the like as shown.

When t is desred to gan access to the interior of the tank for thepurpose of cleaning the filterng plates and substtnting fresh filterngmaterial, the vessel's, B and 0, with the plate L and filtering materialK are raisod out of the tank and Wth the vessel B, the upper secton ofthe ppesF and M and it' t be desired to also remove the vessel D Withits filterng plates and material this may then be readily dono.

The operation of my mproved filter may be briofiy described aS follows:VWater is first poured into the tank at the upper end thereof above theplate L and sad water thon passes through the latterand the filteringmateria K andperforated bottom c whence it flows down through the pipe Fand issues through the perforated arms g, into the vessel A at thespaces d, and out through the said spaces into, the space surroundingthe vessel D until the said water fills or partially fills said vessel Dand the surrounding space. (Or it it be desired the vessel 0 with itsplate and filtering material may be removed and the water introduceddirectly into the pipe F or M.) The 011 to be filtered is then pouredinto the tank and passes through the plate L, filtering material K andbottom 0, and pipe E whei1ce it fiows through the perforated arms g, andupward. through the water in vessel D and then through the plate H andfiltering material H I, thus becoming thoroughly filtered and thenthrough the opening e, whence it fiows into the space surrounding thevessel D and above the water contained in said space and may then bedrawn oi through either of the cocks N. In passing through the sand the011 may carry avvay with it some particles of sand, Which particleswill, however, be removed from the oil when passing through the water invessel D, and any sediment that may be contained in the oil that is notfiltered therefrom will settle upon the hood E or through the water inthe space around vessel D onto the bottom of tank A, whence it may bedrawn ofl through cock or valve O. Should the perfora-- tions in arms g,become clogged then the water or the oil as the case may be will riseupon the bottom 0, and fiow down through the pipe M. What I claim, anddesire to secure by Let-- ters Patent, is-

1. In a filter, the combination Wth a suitable tank, of a vessel Barranged. within the upperportion thereof and having a conicalbottom, avessel C arranged in the vesse1 B and provided With a perforated bottom,filtering material arranged upon said bottom, a

filtering plate above Said material, a vessel D arranged within thelower porton of the tank and having, a less diameter than the interim Ofthe same whereby an annular space is formed between said tank andvessel, a pipe leading at its upper end into the conical bottom ofvessel B and provided at its lower end with a spraying device, afiltering p1ate arranged in the npper portion of vessel D, filteringmaterial above said plate, a conical cover for the vessel D arrangcdabove said filtering material and provided at its center With anaperture throughwhich passes the pipe connecting vessels B and D, saidaperture being sufficiently large to leave an opening around the pipe,and draw-ofi cocks in the tank, for the purpose specified.

2. In a filter, the combination with a suitable tank, et a vessel Barranged within the upper portion thereof and provided with a oonicaibottom, a vessel C arrangec within the Vessel B and provided with aperforated bottom, filterng material arranged uponsaid bottom, afiltering plat-e above said material, a vessel D arranged within thelower portiou of the tank and havng a less diameter than the interior ofthe same, a pipe comrnunicating withthe vessels B, and D, perforatedarme carried by said pipe near its lower end, a filtering plate arrangedin the vessei D, filtering material arranged above said plate, a coverfor the vessel D and provided With an aperture, draw-ofl cocks in thetank, and a pipe M discharging into the vessel D, and a sediment cock orvalve in the tank, for -the purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

ELI F. BUROI-I.

Witnesses:

ALBERT 'WILLSON, O. A. MICHENER.

